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• |Clinical finding| represents the result of a clinical observation, assessment or judgment and includes normal and abnormal clinical states (e.g. |asthma|, |headache|, |normal breath sounds|). The |clinical finding| hierarchy includes concept concepts used to represent diagnoses.
• |Procedure| represents activities performed in the provision of health care. This includes not only invasive procedures but also administration of medicines, imaging, education, therapies and administrative procedures (e.g. |appendectomy|, |physiotherapy|, |subcutaneous injection|).
• |Situation with explicit context| represents concepts in which the clinical context is specified as part of the definition of the concept itself. These include presence or absence of a condition, whether a clinical finding is current, in the past or relates to someone other than the subject of the record (e.g. |endoscopy arranged|, |past history of myocardial infarction|, |family history of glaucoma|).
• |Observable entity| represents a question or assessment which can produce an answer or result (e.g. | systolic blood pressure|, |color of iris|, |gender|).
• |Body structure| represents normal and abnormal anatomical structures (e.g. |mitral valve structure|, |adenosarcoma|).
• |Organism| represents organisms of significance in human and animal medicine (e.g. |streptococcus pyogenes|, |beagle|, |texon cattle breed|).
• |Substance| represents general substances, the chemical constituents of pharmaceutical/biological products, body substances, dietary substances and diagnostic substances (e.g. |methane|, |insulin|, |albumin|).
• |Pharmaceutical/biologic product| represents drug products (e.g. |amoxicillin 250mg capsule|, |paracetamol + codeine tablet|).
• |Specimen| represents entities that are obtained (usually from the patient) for examination or analysis (e.g. |urine specimen|, |prostate needle biopsy specimen|).
• |Special concept| represents concepts that do not play a part in the formal logic of the concept model of the terminology, but which may be useful for specific use cases (e.g. |navigational concept|, |alternative medicine poisoning|).
• |Physical object| represents natural and man-made physical objects (e.g. |vena cava filter|, |implant device|, |automobile|).
• |Physical force| represents physical forces that can play a role as mechanisms of injury (e.g. |friction|, |radiation|, |alternating current|).
• |Event| represents occurrences excluding procedures and interventions (e.g. |flood|, |earthquake|).
• |Environments and geographical locations| represents types of environments as well as named locations such as countries, states and regions (e.g. |intensive care unit|, |academic medical center|, |Denmark|).
• |Social context| represents social conditions and circumstances significant to health care (e.g. |occupation|, |spiritual or religious belief|).
• |Staging and scales| represents assessment scales and tumor staging systems (e.g. |Glasgow Coma Scale|, |FIGO staging system of gynecological malignancy|).
• |Qualifier value| represents the values for some SNOMED CT attributes, where those values are not subtypes of other top level concepts. (e.g. |left|, |abnormal result|, |severe|).
• |Record artefact| represents content created for the purpose of providing other people with information about record events or states of affairs. (e.g. |patient held record|, |record entry|, |family history section|).
• |SNOMED CT Model Component| contains technical metadata supporting the SNOMED CT release.

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Below is a list of attributes used to define |clinical finding| concepts, and a brief description of their meaning:
|Finding site| specifies the body site affected by a condition.
|Associated morphology| specifies the morphologic changes seen at the tissue or cellular level that are characteristic features of a disease.
|Associated with| represents a clinically relevant association between concepts without either asserting or excluding a causal or sequential relationship between the two.
|After| represents a sequence of events where a clinical finding occurs after another |clinical finding| or a |procedure|.
|Due to| relates a |clinical finding| directly to a cause such as another |clinical finding| or a |procedure|.
|Causative agent| identifies the direct causative agent of a disease such as an |organism|, |substance| or |physical force|. (Note: This attribute is not used for vectors, such as mosquitos transmitting malaria).
|Severity| used to sub-class a |clinical finding| concept according to its relative severity.
|Clinical course| represents both the onset and course of a disease.
|Episodicity| represents episodes of care provided by a physician or other care provider, such as a general practitioner. This attribute is not used to represent episodes of disease experienced by the patient.
|Interprets| refers to the entity being evaluated or interpreted, when an evaluation, interpretation or judgment is intrinsic to the meaning of a concept.
|Has interpretation|, when grouped with the attribute |interprets|, designates the judgment aspect being evaluated or interpreted for a concept (e.g. presence, absence etc.)
|Pathological process| provides information about the underlying pathological process for a disorder, but only when the results of that process are not structural and cannot be represented by the |associated morphology| attribute.
|Has definitional manifestation| links disorders to the manifestations (observations) that define them.
|Occurrence| refers to a specific period of life during which a condition first presents.
|Finding method| specifies the means by which a clinical finding was determined. This attribute is frequently used in conjunction with |finding informer|.
|Finding informer| specifies the person (by role) or other entity (e.g. a monitoring device) from which the clinical finding information was obtained. This attribute is frequently used in conjunction with |finding method|.

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Attributes Used to Define Situation With Explicit Context Concepts

|Associated finding| Links links concepts in the |situation with explicit context| hierarchy to their related |clinical finding|.
|Finding context| represents a situation in which a |clinical finding| is known, or unknown, and if known, whether it is present, absent or uncertain (possible), and to also express the meaning that the finding is not actual but is instead an anticipated or possible future finding.
|Associated procedure| links concepts in the |situation with explicit context| hierarchy to concepts in the |procedure| hierarchy for which there is additional specified context.
|Procedure context| indicates the degree of completion, or status of a |procedure|, as well as its various possible future states prior to its being initiated or completed.
|Temporal context| indicates the time of the occurrence of the situation, by indicating whether the associated procedure or finding is actual and therefore occurred in the present, in the past, or at a specified time; or that it is planned or expected in the future.
|Subject relationship context| specifies the subject of the |clinical finding| or |procedure| being recorded, in relation to the subject of the record.

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